<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>05_计算属性</title>
    <script type="text/javascript" src="js/vue.js"></script>
</head>

<body>
    <div id="root">
        姓：<input v-model="firstName"><br />
        名：<input v-model="lastName"><br />
        姓名:<span>{{fullName}}</span>
    </div>
    <script type="text/javascript">
        Vue.config.productionTip = false
        var root = new Vue({
            el: '#root',
            data: {
                firstName: '',
                lastName: ''
            },
            computed: {
                fullName: function () {
                    return this.firstName + '-' + this.lastName
                }
            }
        })
    </script>
</body>

</html>